{"product_id":"icp-furnace-control-board-kit-for-rgs120ldcb0aaa-oem-ships-today","title":"ICP Furnace Control Board Kit for RGS120LDCB0AAA — OEM | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis genuine OEM control board kit (part 1183618) is the integrated furnace control (IFC) for the ICP\/Tempstar\/Heil RGS120LDCB0AAA gas furnace. The control board is the brain of the furnace — it sequences the entire heating cycle, managing the inducer motor, hot surface igniter, gas valve, blower timing, and safety interlocks while monitoring the limit and flame-sensing circuits. It also typically carries diagnostic LED fault codes that simplify troubleshooting. Because it controls 120V and 24V circuits simultaneously and is exposed to heat and electrical surges, the control board is a common failure point. Symptoms of a failed board include a furnace that is completely dead, no response to a thermostat call, no inducer or igniter sequence, a blower that runs constantly or not at all, blank or flashing error LEDs, or repeated random lockouts. This kit includes the replacement board for a direct OEM repair.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e1183618\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eIntegrated Furnace Control Board Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eICP \/ Tempstar \/ Heil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLine Voltage\u003c\/td\u003e\n\u003ctd\u003e120 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eRGS120LDCB0AAA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDirect OEM replacement control board kit for the ICP\/Tempstar\/Heil RGS120LDCB0AAA gas furnace. Confirm the part number on your existing board matches 1183618 before ordering, as control boards are model-specific.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power at the furnace switch and breaker, and verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the furnace control access panel to expose the board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every wire and connector position on the old board before disconnecting — this is critical for a control board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug each harness and the line-voltage terminals, then unscrew the board from its standoffs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new board and reconnect every connector exactly per your photos and the wiring diagram.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and run a full heat call, confirming inducer, igniter, gas valve, and blower sequence correctly with no fault codes.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFurnace is completely dead and unresponsive to thermostat calls\u003c\/li\u003e\n\u003cli\u003eNo inducer, igniter, or blower sequence on a call for heat\u003c\/li\u003e\n\u003cli\u003eBlank, missing, or continuously flashing diagnostic LED codes\u003c\/li\u003e\n\u003cli\u003eRepeated random lockouts that other component swaps don't cure\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\n\u003cp\u003eShips same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"ICP","offers":[{"title":"OEM","offer_id":63027555008883,"sku":"1183618","price":245.7,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047552336243,"sku":"1183618-GEN","price":189.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-1183618_b12526b4-2b57-4603-a9f9-74fa03138695.jpg?v=1782888977","url":"https:\/\/nationalhvacparts.com\/products\/icp-furnace-control-board-kit-for-rgs120ldcb0aaa-oem-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}